What to Watch For on Aberdeen Ash Trees

Ash tree leaves backlit by sunlightPhoto: Marta Wave / Pexels
Aberdeen · Ash Tree Treatment · Step 2 of 5
Aberdeen Fact Bank
County  Brown County
EAB status  not yet confirmed
Population  ~28,000 (2024 estimate)

Every fact cited

Canopy thinning, D-shaped exit holes, bark splitting, and heavy woodpecker activity remain the signs to know, even without confirmed local EAB. In Aberdeen, prairie wind exposure and periodic drought stress can also thin a canopy, so don’t assume EAB from thinning alone — look for the more specific signs like exit holes or larval tunnels before treating it as an EAB case.

Frequently Asked
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What do I do if I think I've spotted EAB in Aberdeen?

Report it to South Dakota DANR's forest health program — that's how new county confirmations have happened previously in the state.